James Croll, metaphysical geologist

James Croll (1821–90) occupies a prominent position in the history of physical geology, and his pioneering work on the causes of long-term climate change has been widely discussed. During his life he benefited from the patronage of leading men of science; his participation in scientific debates was widely acknowledged, not least through his election as a Fellow of the Royal Society in 1876. For all that, the intellectual contribution that Croll himself considered to be of most significance—his articles and two books on metaphysics—has attracted very little attention. In addressing this neglect, it is argued here that Croll's interest in metaphysics, grounded in his commitment to a Calvinist form of Christianity, was central to his life and thought. Examining together Croll's geophysical and metaphysical writings offers a different and fruitful way of understanding his scientific career and points to the wider significance of metaphysics in late-Victorian scientific culture.

'False, fleeting, perjured Clarence': pseudonymity and criminality in the writings of James Clarence Mangan

This article explores the significance of the adopted partial pseudonym “Clarence” to James Clarence Mangan (1803-1849), who is increasingly regarded as the most important Irish poet before W. B. Yeats. Tracing the literary history of “Clarence” from Shakespeare to Maria Edgeworth, this essay argues that the intriguing adoption exposes a preoccupation with themes of unlawful textual copying that is at the centre of Mangan’s imagination. These tropes assume singular significance when appreciated alongside Mangan’s profession as a scrivener. While literary criticism has separated Mangan the poet from Mangan the legal scribe, his hitherto under-explored assumption of “Clarence” provides a clue to their close and crucial connection. These themes of pseudonymity, copying, and criminality combine with particular resonance in his quasi-translation “The Man in the Cloak” (1838) to open up new perspectives on Mangan’s writing and its participation in wider European cultural contexts and concerns. The essay will conclude with a salient comparison of Mangan’s story with Nikolay Gogol’s seminal story “The Overcoat”, or, “The Cloak” (1842).

Plasma HDL cholesterol and risk of myocardial infarction: A mendelian randomisation study

Background: High plasma HDL cholesterol is associated with reduced risk of myocardial infarction, but whether this association is causal is unclear. Exploiting the fact that genotypes are randomly assigned at meiosis, are independent of non-genetic confounding, and are unmodified by disease processes, mendelian random isation can be used to test the hypothesis that the association of a plasma biomarker with disease is causal.
Methods: We performed two mendelian randomisation analyses. First, we used as an instrument a single nucleotide polymorphism (SNP) in the endothelial lipase gene (LIPG Asn396Ser) and tested this SNP in 20 studies (20 913 myocardial infarction cases, 95 407 controls). Second, we used as an instrument a genetic score consisting of 14 common SNPs that exclusively associate with HDL cholesterol and tested this score in up to 12 482 cases of myocardial infarction and 41 331 controls. As a positive control, we also tested a genetic score of 13 common SNPs exclusively associated with LDL cholesterol.
Findings: Carriers of the LIPG 396Ser allele (2·6% frequency) had higher HDL cholesterol (0·14 mmol/L higher p=8×10-13) but similar levels of other lipid and non-lipid risk factors for myocardial infarction compared with noncarriers. This difference in HDL cholesterol is expected to decrease risk of myocardial infarction by 13% (odds ratio [OR] 0·87, 95% CI 0·84-0·91). However, we noted that the 396Ser allele was not associated with risk of myocardial infarction (OR 0·99, 95% CI 0·88-1·11, p=0·85). From observational epidemiology, an increase of 1 SD in HDL cholesterol was associated with reduced risk of myocardial infarction (OR 0·62, 95% CI 0·58-0·66). However, a 1 SD increase in HDL cholesterol due to genetic score was not associated with risk of myocardial infarction (OR 0·93 95% CI 0·68-1·26, p=0·63). For LDL cholesterol, the estimate from observational epidemiology (a 1 SD increase in LDL cholesterol associated with OR 1·54, 95% CI 1·45-1·63) was concordant with that from genetic score (OR 2·13 95% CI 1·69-2·69, p=2×10 -10).
Interpretation: Some genetic mechanisms that raise plasma HDL cholesterol do not seem to lower risk of myocardial infarction. These data challenge the concept that raising of plasma HDL cholesterol will uniformly translate into reductions in risk of myocardial infarction.

Kingship by Descent or Kingship by Election? The Contested Title of James VI and I

Throughout the reign of Elizabeth I, a steady stream of tracts appeared in English print to vindicate the succession of the most prominent contenders, Mary and James Stuart of Scotland. This article offers a comprehensive account of the polemical battle between the supporters and opponents of the Stuarts, and further identifies various theories of English kingship, most notably the theory of corporate kingship, developed by the Stuart polemicists to defend the Scottish succession. James's accession to the English throne in March 1603 marked the protracted end of the debate over the succession. The article concludes by suggesting that, while powerfully renouncing the opposition to his succession, over the course of his attempt to unify his two kingdoms, James and his supporters ultimately departed from the polemic of corporate kingship, for a more assertive language of kingship by natural and divine law.